Punching metals



UNITED STATES PATT OFI@ PHILIPP KOCH, OF NEW HAVEN, CONNECTICUT.

PUNCHING- METALS.

Specification of Letters Patent No. 25,653, dated October 4, 1859.

To all whom t may concern:

Be it known that I, PHILIPP Kooi-r, of New Haven, in the county of New Haven and State 0f Connecticut, have invented a new and Improved Machine for Cutting and Punching Metal and other Substances; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specification, in which- Figure 1, is a vertical section of my invention taken in the line Fig. 2. Fig. 2, is a front view of ditto, with the front plate removed in order to show a portion of the internal mechanism. Fig. 3, is a detached back view of the front plate.

Similar letters of reference indicate corresponding parts in the several figures.

This invention consists, 1st, in havinga series of punches and holsters or shears, either or both, attached to a single rotating head substantially as hereinafter shown, whereby either of a series of punches or shears that may be required may be readily adjusted for use.

The invention consists, 2d, in a novel way of operating the punches or shears, whereby any false or casual movement or stroke of the latter is avoided and the cutting or punching tool, as well as the work, prevented from being injured thereby.

To enable those skilled in the art to fully understand and construct my invention I will proceed to describe it.

A, represents a horizontal bed-plate which may be supported at a suitable height by feet a, and B, is a plate which is supported at a suitable height above plate A by uprights b, attached to plate A.

C is a vertical arbor which has a circular plate c, at its lower end and a head CZ, at its upper end. The plate c, serves as a bed for bolsters e, or for stationary blades f, of shears either or both being used, and the head d, serves as a receptacle for arbors e, which have punches f, or shear blades g, attached to their lower ends. The arbors e, each having a spiral spring h, around them said springs having a tendency to keep the arbors in an elevated state. The arbors are placed directly in line each with a bolster e, or cutting blade f, on the plate c. The axis of the arbor C, extends down through the bed-plate A, and has a bevel wheel D, on it, into which a bevel pinion E, on a shaft F,

gears, G, is a spring attached to the bed plate A, and having a pin z' secured to it, said pin fitting in either of a series of holes j, in the periphery of the plate c, so as to retain the plate and head when the device is in operation.

The upper end of each arbor c, is grooved as shown clearly at 7c, in Fig. l. These grooves are formed of a round opening with a slot the latter being narrower than the former so that a projection Z, at the lower end of a yoke I-I, will lock into the top ends of the arbors when the arbor C, is rotated and the arbors brought in line with said projection Z, the latter having a cylindrical protuberance m, which fits into the round opening of the grooves of the arbors e. This will be clearly understood by referring to Fig. l.

The yoke H, is litted in a box I, which is at the front end of the plate B. This yoke is allowed to slide freely up and down in the said box and it is operated by an eccentric J, which is at the front end of a shaft K, said eccentric being within a block L, that is fitted loosely within the yoke.

The shaft K, is fitted in a proper bearing.

M, on the plate B, and a shaft N, is also fitted in the same bearing. The two shafts K, N, are connected when required by means of lugs or projections a, which are brought in contact with each other by forcing inward the shaft K, a spring o, between the two shafts having an inclination to keep the shafts disconnected, see Fig. l. To the outer end of shaft N, the driving power is communicated and said shaft has a collar 79, on it which prevents any longitudinal movement of the same.

To the front part of the box I, a plate O, is secured. This plate has a recess or chamber g, within it and a rod P, is fitted horizontally in the plate, said rod having a crank 1', tted loosely on its inner end on which crank a spring s, bears and has a tendency to keep the end of the crank down on'Y the lower edge of an opening t, in the back side of the plate O, as shown clearly in Fig. 3. To the rod P, a spring u, is connected said spring having a tendency to keep the rod I), forced outward from the plate O, to the extent of its movement, see Fig. l. In the inner side of plate O, and just below the opening t, a recess e, is made and to the outer face side of the eccentric J, a pin fw, is attached.

The operation of the device is as follows z- It will be seen from the foregoing description that either punch and bolster or shears of the series may be moved around to the front of the machine and either of them used, the pin z', of spring G, retaining the plate c, and head d, in proper position while the punches or shears are in operation. Motion is given the shaft N, by any convenient power and when the work is adjusted on the proper bolster e, or shear blade y, the operator presses in the rod P, and by so doing causes the end of crank r, to force inward the block L, and shaft K, as the block bears against the shoulder of shaft K, which shoulder is formed by the eccentric J. The crank r, bears against the upper part of the block L. By this means the shaft K, is coupled with the shaft N, and the pin fw, of the eccentric J, is forced out from the recess fv. The eccentric J, then forces down the yoke H, and the arbor e, which is attached to it so that a punch 7U, or cutter g, will be forced down and raised, the 'eccentric J, making one revolution the pin fw passing into recess o, at the termination of the revolution. It will be seen that the crank r, when the rod P, is forced inward bears against the upper part of block L and as said block is moved downward it immediately passes beyond the action of the crank pin w, keeping the two shafts K, N, locked or coupled in consequence of bearing against the inner side of plate O, and when the block L, rises and comes in contact with crank 1, it yields or turns on rod P, sufliciently to allow the pin w, to pass into recess '1). It will be seen therefore that the rod P, must be allowed to be forced outward by its spring u, and be forced inward by the operator after each movement of the yoke H, before a succeeding movement can be given it and therefore the work cannot be injured nor the punches or shears broken by any casual movement of the punches or shears.

I am aware that punches of various sizes have been attached to rotating heads so that either of a series might be used as required, but I am not aware that a series of corresponding bolsters has even been attached to the head or arbor so as to rotate with them. I do not claim therefore broadly the employment or use of a rotating head or punches or arbors but,

I do claim as new and desire to secure by Letters Patent,

l. The employment or use of a series of arbors to which punches or shear blades are l attached, fitted in a rotating or adjustable head d, when said head is connected with an arbor C, having a plate o, attached provided with holsters e', and shear blades f, corresponding with the punches and shear blades of the head, substantially as and for the purpose set forth.

2. The means employed for actuating the yoke H, and consequently the arbors e, to wit, the adjustable shaft K, provided with the eccentric J, pin fw, fitted within the block L, of yoke H, the adjustable shaft P, provided with the lower crank 1^, and the recess o, in the back part of plate O, to receive pin w, substantially as and for the purposes set forth.

PHILIPP KOCH. Witnesses:

R. H. STARR, SAML. 0. GAY. 

